The standard heat of formation of `AI` is `-837.8 kJ mol^(-1)` at `25^(@)C`. If `AI` reacts with `O_(2)` at `25^(@)C`, which of the following release `250kJ` of heat?

The standard heat of combustion of Al is -837.8 kJ mol^(-1) at 25^(@)C . If Al reacts with O_(2) at 25^(@)C , which of the following release 250kJ of heat?

The standard heat of combustion of Al is -837.8 kJ mol^(-1) at 25^(@)C . If Al reacts with O_(2) at 25^(@)C , which of the following release 250kJ of heat?

The standard heat of combustion of Al is -840kJ mol^(-1) at 25^(@)C . If Al reacts with O_(2) at 25^(@)C , which of the following release 280kJ if heat?

"At 25^(@)C , the standard heat of formation of H_(2)O(l) is -285.83kJ*mol^(-1) "-What does it mean?

At 25^(@)C the standard heat of formation of liquid benzene is +49.0 kJ*mol^(-1) -what does it mean?

At 25^(@)C , the standard heat of formation for Br_(2)(g) is 30.9kJ*mol^(-1) . At this temperature, the heat of vaporisation for Br_(2)(l) is-

The standard heat of formation of sodium ions in aqueous solution from the following data : Heat of formation of NaOH(aq) at 25^(@)C = - 470.7 KJ : Heat of formation of OH^(-1) at 25^(@)C = -228.8 KJ is :

The standard heat of formation of sodium ions in aqueous solution from the following data : Heat of formation of NaOH(aq) at 25^(@)C = - 470.7 KJ : Heat of formation of OH^- at 25^(@)C = -228.8 KJ is :